100 lines
2.7 KiB
C
100 lines
2.7 KiB
C
#include "context.h"
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static const u8 colorFmtSizes[] = {2,1,0,0,0};
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static const u8 depthFmtSizes[] = {0,0,1,2};
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static inline u32 calcColorBufSize(u32 width, u32 height, u32 fmt)
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{
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return width*height*(colorFmtSizes[fmt]+2);
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}
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static inline u32 calcDepthBufSize(u32 width, u32 height, u32 fmt)
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{
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return width*height*(depthFmtSizes[fmt]+2);
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}
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bool C3D_RenderBufInit(C3D_RenderBuf* rb, int width, int height, int colorFmt, int depthFmt)
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{
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if (rb->colorBuf || rb->depthBuf) return false;
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rb->colorFmt = colorFmt;
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rb->depthFmt = depthFmt;
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rb->width = width;
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rb->height = height;
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rb->clearColor = rb->clearDepth = 0;
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rb->colorBuf = vramAlloc(calcColorBufSize(width, height, colorFmt));
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if (!rb->colorBuf) return false;
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rb->depthBuf = vramAlloc(calcDepthBufSize(width, height, depthFmt));
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if (!rb->depthBuf)
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{
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vramFree(rb->colorBuf);
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rb->colorBuf = NULL;
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return false;
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}
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return true;
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}
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void C3D_RenderBufClearAsync(C3D_RenderBuf* rb)
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{
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u32 colorBufSize = calcColorBufSize(rb->width, rb->height, rb->colorFmt);
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u32 depthBufSize = calcDepthBufSize(rb->width, rb->height, rb->depthFmt);
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GX_SetMemoryFill(NULL,
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(u32*)rb->colorBuf, rb->clearColor, (u32*)((u8*)rb->colorBuf+colorBufSize), BIT(0) | ((u32)colorFmtSizes[rb->colorFmt] << 8),
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(u32*)rb->depthBuf, rb->clearDepth, (u32*)((u8*)rb->depthBuf+depthBufSize), BIT(0) | ((u32)colorFmtSizes[rb->depthFmt] << 8));
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}
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void C3D_RenderBufTransferAsync(C3D_RenderBuf* rb, u32* frameBuf, u32 flags)
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{
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u32 dim = GX_BUFFER_DIM((u32)rb->width, (u32)rb->height);
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GX_SetDisplayTransfer(NULL, (u32*)rb->colorBuf, dim, frameBuf, dim, flags);
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}
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void C3D_RenderBufBind(C3D_RenderBuf* rb)
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{
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C3D_Context* ctx = C3Di_GetContext();
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ctx->flags |= C3DiF_RenderBuf;
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ctx->rb = rb;
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C3D_SetViewport(0, 0, rb->width, rb->height);
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}
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void C3Di_RenderBufBind(C3D_RenderBuf* rb)
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{
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u32 param[4];
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param[0] = param[1] = 1;
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GPUCMD_AddIncrementalWrites(GPUREG_0110, param, 2);
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param[0] = osConvertVirtToPhys((u32)rb->depthBuf) >> 3;
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param[1] = osConvertVirtToPhys((u32)rb->colorBuf) >> 3;
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param[2] = 0x01000000 | (((u32)(rb->height-1) & 0xFFF) << 12) | (rb->width & 0xFFF);
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GPUCMD_AddIncrementalWrites(GPUREG_DEPTHBUFFER_LOC, param, 3);
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GPUCMD_AddWrite(GPUREG_006E, param[2]); //?
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GPUCMD_AddWrite(GPUREG_DEPTHBUFFER_FORMAT, rb->depthFmt);
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GPUCMD_AddWrite(GPUREG_COLORBUFFER_FORMAT, ((u32)rb->colorFmt << 16) | colorFmtSizes[rb->colorFmt]);
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GPUCMD_AddWrite(GPUREG_011B, 0x00000000); //?
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// "Enable depth buffer" (?)
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param[0] = param[1] = 0xF;
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param[2] = param[3] = 0x2;
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GPUCMD_AddIncrementalWrites(GPUREG_0112, param, 4);
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}
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void C3D_RenderBufDelete(C3D_RenderBuf* rb)
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{
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if (rb->colorBuf)
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{
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vramFree(rb->colorBuf);
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rb->colorBuf = NULL;
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}
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if (rb->depthBuf)
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{
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vramFree(rb->depthBuf);
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rb->depthBuf = NULL;
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}
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}
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